reuseport_migrate_sock(9)

💖 NAME 💖

reuseport_migrate_sock — literally picks a socket out of an SO_REUSEPORT group, bestie. That's the whole vibe. 👑

✨ SYNOPSIS ✨

struct sock * reuseport_migrate_sock (struct sock *sk , struct sock
*migrating_sk , struct sk_buff *skb );

okay so it's giving "three args, one socket pointer back" and honestly? iconic. 🦋

🎀 ARGUMENTS 🎀

• sk — a closeed or shutdowned socket in the group. that's it, that's her job. she's done, she's clocked out, she's just here so the group knows what's up. 💅
• migrating_sk — ngl this one has range ✨. it's either an ESTABLISHED/SYN_RECV full socket chillin' in the accept queue, or a NEW_SYN_RECV request socket mid-3WHS. two moods, one pointer. main character energy fr fr. 🫶
• skb — the skb you run through the BPF filter. and here's the tea 🍓: it returns a socket (with sk_refcnt +1, don't forget the refcount bestie, she's counting on you 😭) that should accept the child socket — or NULL on error. no cap, check for that NULL. 💀

🌸 SEE ALSO 🌸

Kernel file ./net/core/sock_reuseport.c plus the girlies reuseport_add_sock(9) and reuseport_select_sock(9) — go read them, iykyk. 📚✨

lowkey reminder: sk_refcnt +1 means somebody has to drop that reference eventually. not me forgetting. not you either. 🙈

and that's the whole page, babe 💖 — brought to you by ./net/core, October 2026, and the manual page reuseport_migrate_sock(9). slay, go migrate some sockets responsibly 🌈⭐